Riveting device



Sept. 18, 1951 Filed 001;. 4, 1946 P. H. IRMISCHER 2,568,338

RIVETING DEVICE 2 Sheets-Sheet l INVE'NTOR. %w H hwy/saber HIS ATTORNEY Sept. 18. 1951 P. H. IRMISCHER 2,568,338

RIVETING DEVICE Filed Oct. 4, 1946 2 Sheets-Sheet 2 IN VEN TOR.

11/16 A TTOHIVEY.

Patented Sept. 18, 195i 1 UNITED STATES PATENT OFFICE Paul H. Irmischer, Chicago, 111. Application October 4, 1946, Serial No. 701,249

4 Claims. 1

This invention relates to certain new and useful improvements in a riveting device and has for its principal object the provision of an improved construction of this character which will be highly eflicient in use and economical in manufacture. I

Among the several objects of the invention is a riveting device which is substantially portable in character; that is, the same may be attached to drill presses of different types and construction without'modification of either the drill press or the riveting device.

A still further object of the invention is the provision of a riveting device which is capable of being handled and operated in the most economical and expeditious manner.

Another object of the invention is the provision of a riveting device having provision for connection to a standard drill press or the like.

Another object of the invention is the provision of a riveting device which comprises relatively few parts and which may be assembled in the most economical and expeditious manner.

Another object of the invention is the provision of a riveting device which has provision for reducing the noise created by its operation.

A further and equally important object is the provision of a riveting device which is substantially self-lubricating.

A still further object of the invention is the provision of a riveting device having an adjustable peen tool whereby two members may be tightly riveted together or loosely riveted together as the case may require.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction, and in which:

Fig. 1 is a perspective view of the riveting device embodying my invention;

Fig. 2 is a vertical sectional detail view of the same;

Fig. 3 is an expanded view illustrating the relationship of the several parts of the riveting device embodying my invention;

Fig. 4 is a fragmentary prospective View of a standard drill press illustrating my riveting device associated therewith;

Fig. 5 is a fragmentary sectional detail view showing the relationship of the peening tool with respect to a rivet at the start of the riveting operation screw 22.

Fig. 6 is a similar fragmentary sectional detail view but showing the riveting operation completed;

Fig. 7 is a perspective view of a form of peening tool adapted to be associated with the tool holder embodied in my invention; and

Fig. 8 is a fragmentary sectional detail view of the end of said peening tool.

The several objects of my invention are accomplished by the preferred form of construction as shown in the accompanying drawings.

In this connection, a holding member in the form of a ring-like member is indicated at I0. This ring-like member It! comprises a web I I providing, together with the walls I2 of the ring on opposite sides of the web II, sockets I3 and I4. The web II is provided with a centrally located opening I and projected through this opening I5 is the cylindrical body I6 of a base cap I! having a depending boss I8. In this base cap H, with the major portion thereof located in the boss I8, is a socket I9. Projected in this socket I9 is the shank of a peen tool holder 2I. This shank 20 is removably secured in the socket I9 by a set The peen tool holder 2I has a centrally located here 23 formed therein and in this bore 23 the peen tool 24 is adjustably mounted, the latter being fixed in a predetermined adjusted position by means of a set screw 25. The end 26 of the peen tool 24 is provided with a plurality of peen prongs 21, of which there may be any number. 7

The base I! has a circular lateral flange 28 which operates .in the socket I4. Between this flange 28 and the web II and within the socket I4 is a sound-absorbin ring 29 formed of any suitable and desirable material.

Formed in the top portion of the cylindrical body I6 is a ring-like groove 30. Projecting from the bottom wall 3| of this groove 30 and fixed to the cylindrical body I6 are connecting pins 32. An upper cap portion 33 is provided with a marginal lateral ring-like flange 34. This flange 34 provides, together with the cap 33, a recessed portion 35 into which projects the upper end portion of the cylindrical body I6. The flange 34 projects into the socket I3. The cap 33 is provided with spaced openings 36, into which project the pins 32.

The cap 33 provides a centrally located sleeve 31. Projecting through this sleeve 31 is the shank 38, which has a reduced outer end portion 39 threaded into the cylindrical body I6. The shank 38, exterior of the sleeve 31, provides an enlarged head 39' and this head 39' has a predetermined spacing from the adjacent end portion of the sleeve 3! and is of a diameter less than the outside diameter of the sleeve, the space being sufficient to permit relative movement of the upper and lower caps 33 and l! relative to the ring In for riveting operation but not sufiicient to permit caps 33 and IT to escape from ring [0.

I On the web II are mounted trip buttons 40, there being in the present instance three of such buttons; however, thernumber of 'the same may vary. These buttons "40 are tapered ina'di-rection substantially at right angles with respect to a radius line drawn from the cylindrical body '16 so that the taper will be downwardly in the direction of rotation of the caps 33 and IT.

The flange 34 of the cap 33 carries trip buttons 4| tapered in an opposite direction to the taper of the buttons 40, there being as many such trip buttons 4| as there are buttons 40. I

Formed in the ring ill is a threaded socket 42 and threaded in this socket 42 is a lubricating cap 43 adapted for attachment to the nozzle of a grease gun in a well known manner. Communicating with this socket 452 is a passage 44, through which the lubricant finds its way into the opening l for passage between the several moving parts of the device.

In Fig. 4, I have illustrated a well known and standard drill press, to illustrate the manner in which my riveting device maybe associated therewith. In this connection, the drill press, as shown in Fig. 4, includes a post 45 and a rotatable chuck 46 and a work table 41, the latter adjustably carried by the post 45.

The chuck 46 is rotated in the usual and well known manner and is of a construction Well known in the art.

It is with such a drill press, or one similar thereto, that my .riveting device is adapted to be associated. This is accomplished by inserting the sleeve 31 into the chuck 46 to which chuck 46 it will be attached in a well known manner. To prevent rotation of the ring ID with the chuck 46, I provide a handle 48 and this handle 48 is adapted to bear against the post 45 in the manner shown sin Fig. l.

When the chuck 46 is rotated, the caps 33 and it will be rotated therewith, the ring it and web ll being held against rotation by engagement of the handle 48 with the post 45. As the caps 33 and i? are rapidly rotated, the trip buttons 43 and 4| will have rapid contact with each other and by virtue of their tapered engaging surfaces will move the cap 33 upwardly away from the base cap i'l against the .pull of the operators arm on :7

bar 50 as the buttons 4| pass over the buttons 48, and as buttons 4! pass beyond buttons 40, cap 33 will drop to rapidly impinge the peen tool 24 in rivet head forming operation.

The chuck 46 is supported by a rotating shaft 49 comprising a part of the standard drill press and movable in the direction of its'length, by means well known in the drill press art including a handle 50. In this manner the peen tool 24 is brought down upon the stock or rivet shank for forming the head thereon.

If two members such as 23' and 24",, Figs. 5 and 6 are to be tightly riveted together by a, rivet 25', as shown in Figs. 5 and 6, the peentool 24 is adjusted to its extreme'outer position relative to the sleeve 31. On the other hand, if the two members are to be loosely riveted together, then the peen tool 24 is adjusted within the sleeve 3'1, a distance sufilcient to produce the loose rivet 4 connection. Such distance may vary according to the looseness desired.

From the foregoing description, it is apparent that I provide a riveting device which is substantially portable in character, capable of attachment or association with the chuck of a standard and well known drill press, one that comprises few parts and is capable of economical production and highly efiicient in use.

While I have illustrated-and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modifications without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

.Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

1 A riveting device comprising a base member having a socket formed therein and an oppositely disposed cylindrical boss, a peen tool holder mounted in said socket, a peen tool mounted in said holder, a holding member having a wall portion provided with a central opening for the .reception of said boss, trip buttons on said wall and having top surfaces tapered in a direction substantially at right angles with radial lines through said boss, a cap mounted in said holding member, trip buttons on said cap and having surfaces tapered in a direction opposite to the. tapered surfaces of the first mentioned trip buttons and adapted for engagement with said tapered surfaces of said first mentioned trip buttons, a sleeve on said cap, a stud screw projected through said sleeve and threaded into said boss and hav ing an enlarged head on one end thereof spaced a limited distance fromsaid sleeve and cooperating with said sleeve .to limit the relative move.- ment of saidbase member and. said cap with respect to each other by the engagement of the trip buttons on said wall with the tripbuttons on said cap, and means for connecting said base and said cap together for limited movement relative to each other by action of the engagement of the tapered surfaces of said trip buttons.

2. A riveting device comprising a basemember having a socket formed therein and an oppositely disposed cylindrical boss, a peen tool holder mounted in said socket, a peen tool mounted in said holder, a holding member having a wall portion provided with a central opening for the reception of saidboss, trip buttons on said wall and having top surfaces tapered in a direction substantially at right angles with radial lines through said boss, a cap mounted in said hold ing member, trip buttons on said cap and having surfaces tapered in a direction opposite to the-tapered surfaces of the first mentioned trip buttons and adapted for engagement with said tapered surfaces of said first mentioned trip buttons, a sleeve on said cap, a stud screw projected through said sleeve and threaded into said boss and having an enlarged head-on one end thereof spaced a limited distance from saidsleeve, means for connecting said base and said cap together for limited movement relative to each other by action of the engagement of the tapered surfaces of said trip buttons, and a sound absorbing member disposed between said wall and a flange of said base.

3. A riveting device comprising a base member having a socket formed therein and an oppositely g, disposed cylindrical boss, a peen tool holder mounted in said socket, a peen tool mounted in said holder, a holding member having a wall portion provided with a central opening for the reception of said boss, trip buttons on said wall and having top surfaces tapered in a direction substantially at right angles with radial lines through said boss, a cap mounted in said holding member, trip buttons on said cap and having surfaces tapered in a direction opposite to the tapered surfaces of the first mentioned trip buttons and adapted for engagement with said tapered surfaces of said first mentioned trip buttons, a sleeve on said cap, a stud screw projected through said sleeve and threaded into said boss and having an enlarged head on one end thereof spaced a limited distance from said sleeve, means for connecting said base and said cap together for limited movement relative to each other by action of the engagement of the tapered surfaces of said trip buttons, said peen holder having an opening formed therein in which said tool is mounted and said tool being adjustable relative to said holder, and means for securing said tool to said holder in a predetermined adjusted position.

4. A riveting device comprising a base member having a socket formed therein and an oppositely disposed cylindrical boss, a peen tool holder mounted in said socket, a peen tool mounted in said holder, a holding member having a wall portion provided with a central opening for the reception of said boss, trip buttons on said wall and having top surfaces tapered in a direction sub- '6 stantially at right angles with radial lines through said boss, a cap mounted in said holding member, trip buttons on said cap and having surfaces tapered in a direction opposite to the tapered surfaces of the first mentioned trip buttons and adapted for engagement with said tapered surfaces of said first mentioned trip buttons, a sleeve on said cap, a stud screw projected through said sleeve and threaded into said boss and having an enlarged head on one end thereof spaced a limited distance from said sleeve, means for connecting said base and said cap together for limited movement relative to each other by action 7 of the engagement of the tapered surfaces of said REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 827,994 Petrelli Aug. 7, 1906 1,196,656 Bugbee Aug. 29, 1916 2,453,137 Karweit Nov. 9, 1948 

